collaborators

5 papers

cs.SE2026

SpreadsheetBench 2: Evaluating Agents on End-to-End Business Spreadsheet Workflows

Jian Zhu, Yuzheng Zhang, Zeyao Ma +11

Spreadsheets are widely used for business analysis, financial modeling, reporting, and decision-making. However, most existing spreadsheet benchmarks evaluate isolated operations s…

cs.LG2026

Sparse-RL: Breaking the Memory Wall in LLM Reinforcement Learning via Stable Sparse Rollouts

Sijia Luo, Xiaokang Zhang, Yuxuan Hu +6

Reinforcement Learning (RL) has become essential for eliciting complex reasoning capabilities in Large Language Models (LLMs). However, the substantial memory overhead of storing K…

cs.CL2025

CoT-based Synthesizer: Enhancing LLM Performance through Answer Synthesis

Bohan Zhang, Xiaokang Zhang, Jing Zhang +3

Current inference scaling methods, such as Self-consistency and Best-of-N, have proven effective in improving the accuracy of LLMs on complex reasoning tasks. However, these method…

cs.LG2025

FairACE: Achieving Degree Fairness in Graph Neural Networks via Contrastive and Adversarial Group-Balanced Training

Jiaxin Liu, Xiaoqian Jiang, Xiang Li +2

Fairness has been a significant challenge in graph neural networks (GNNs) since degree biases often result in un-equal prediction performance among nodes with varying degrees. Exis…

cs.CL2025

TableLLM: Enabling Tabular Data Manipulation by LLMs in Real Office Usage Scenarios

Xiaokang Zhang, Sijia Luo, Bohan Zhang +12

We introduce TableLLM, a robust large language model (LLM) with 8 billion parameters, purpose-built for proficiently handling tabular data manipulation tasks, whether they are embe…